Объяснение:
3x^2 - 16x - 28 = 0
D = 8 + 84 = 8 + 42 + 20 + 22 = 81.
x1 = 8 + 9/ 3 = 6
x2 = 8 - 9/3 = -1/3
x1 * x2 = -2
x1 + x2 = -17/3
Объяснение:
3x^2 - 16x - 28 = 0
D = 8 + 84 = 8 + 42 + 20 + 22 = 81.
x1 = 8 + 9/ 3 = 6
x2 = 8 - 9/3 = -1/3
x1 * x2 = -2
x1 + x2 = -17/3